May 26, 2020 1 #1 seshow Mechanical May 26, 2020 1 interesting vintage video for principles of refrigeration and heat transfer Link
May 29, 2020 #2 razookm Chemical Jan 14, 2017 22 Good one and easy to understand for a layman. Surprised to note that the link has fewer than 20 viewers. Upvote 0 Downvote
Good one and easy to understand for a layman. Surprised to note that the link has fewer than 20 viewers.
